Improvement in rotary harrows



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Unrrnn S'rn'rns PATENT FFOE.

SAMUEL HARTMAN, OF PITTSBURG, PENNSYLVANIA.

IMPROVEMENT IN ROTARY HARROWS.

Specification forming part of Letters Patent No. 207,657, datedSeptember 3, 1878, application iiled .my 29, 187e.

To all whom it may concern:

Beit known that I, SAMUEL HARTMAN, of Pittsburg, in the county ofAllegheny and State of Pennsylvania, have invented certain new anduseful Improvements in Rotary Harrows; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it pertains tomake and use it, reference being had to the accompanying drawings, whichform part of this specification.

My invention relates to an improvement in rotary harrows, and isintended as an improvement upon the patent which was granted me February26, 1878, No. 200,656 5 and it consists in the arrangement andcombination of devices by which the driver, seated upon the sulky, maychange the harrow into a twowheeled vehicle, or back from a vehicle intoa harrow again, Without leaving his seat and it further consists in thedevices for raising the wheels and securing them in a vertical position,all of which will be more fully described hereinafter.

The accompanying drawings represent my invention, in which Figure l is aplanview,

.showing the wheels raised; Fig. 2, a similar view showing the wheelsconverted into a harrow; and Fig. 3 is a rear elevation. Figs. 4 and 5are details.

A represents a cross-bar, in the ends of whichare vertical slots, and inthese slots the lugs B are pivoted. These lugs project beyond and abovethe ends of the cross-bar in the form of eyes, a, for the reception ofthe axles of the harrow-wheels, and have a movement through aboutone-quarter of a circle.

The forks b, made of cast-iron, have their ends overlap the sides of theeyes, as shown, and passed through both ends of each fork and the eye ais the short axle, o, upon which the combined wheel and barrow d turns.Swiveled in the forks are the bars d', to the outer ends of which barsare pivoted the rods e. These rods extend horizontally forward, an dhave their front ends pivoted to the crossbar h, at any suitabledistance from its end. As the forks b are swiveled upon the bars d',when the eyes a are moved outward from a vertical position to ahorizontal one, in a line with the cross-bar A, the forks turn upon thebars d', as shown, until their edges assume a vertical position. v

On the rear sides of the eyes a are secured the levers L, which assume avertical position when the wheels are horizontal, and a horizontal onewhen the wheels are vertical.

By means of these levers the driver upon the seat S may, at hisoption,without leavin his seat, chan ge the harrow into a two-wheeledvehicle, by simply drawing these levers inward from a vertical positionuntil the wheels assume a vertical position, when the hooks K, pivotedto the levers, automatically fasten themselves under the pins e3,projecting from the cross-bar A, and securely hold the wheels in thatposition. v

- If desired to again perform the work of llarrowing, the hooks arewithdrawn from Linder the pins by means of cords or chains l, attachedto the levers and hooks within reach of the driver, and the wheels madeto reassume a horizontal position by forcing the lcvers from ahorizontalto a vertical position.

VW'hen the wheels are raised up by the levers, their axles, confinedwithin the holes of the arms of the forks b and the eyes a of the lugs,rest upon the tops of the outer ends of the cross-bar A.

The seat S occupies the central part of the cross-bar A. Under it is apin or rod, p, passing through a hole in the rear end of the tongue linto the cross-bar A, which tongue, although secured by another pin, lv,through the cross-bar h, is free to move sidewise during the process ofharrowing.

If the barrow is changed into a vehicle, a pin, m, is passed through thetongue in front of the seat, and inserted into one of the slats under oron top of the cross-bar A, upon which rests the drivers feet to steadyit.

The rods e, to which the cross-bar 7L is pivoted, and the tongue T, havea simultaneous lateral movement when harrowing, to accommodatethemselves to the irregularities of the surface ot' the ground. Thesingle-trees are attached to the cross-piece h.

Having thus described my invention, I claiml. The swiveled bars d', incombination with In testimony that I claim the foregoing I the cross-burh, tongue T, und pins p o m, subhave hereunto set my hand this 16th dayof stantially as described. July, 1878.

2. On 2t rota-ry barrow Convertible into a SAMUEL HARTMAN. two-WheeledVehe1e,the1evers L, hooks fi, and Witnesses: cords or eh21-iusZ,substantiu1ly as set fort-h T. F. LEHMANN,

und described. SAML. DlEsoHER.

